ADP2109 converter equivalent, step-down converter.
Peak efficiency: 95% Discharge switch function Fixed frequency operation: 3 MHz Typical quiescent current: 18 μA Maximum load current: 600 mA Input voltage: 2.3 V to 5.5 .
the ADP2109 has a power save mode that reduces the switching frequency under light load conditions. The ADP2109 runs on.
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